James henry jackson



(No Model.) v 2 Sheets-Shet 1. J. H. JACKSON.

BOB SLB'IGH. No. 516,094. Patented Mar. 6, 1894.

fiu eni oi UNITED STATES PATENT @rrrcn.

JAMES HENRY JACKSON, OF KEADY, CANADA.

BOB-SLEIGH.

SPECIFICATION formingpart of Letters Patent No. 516,094, dated March 6,1894. Application filed July 15, 1893. Serial No. 480,565. (No model.)

To all; whom it may concern:

Be it known that 1, James HENRY JACKSON, of the village of Keady, in thecounty of Grey, in the Province of Ontario, Canada, have invented acertain new and Improved Bob- Sleigh, of which the following is aspecification.

The object of the invention is to construct astrongly made bob-sleigh inwhich each run nor will adjust itself independently of the others with aminimum of motion to the bents, and it consists, of bobs in which blocksare bolted to the center of each runner in which blocks the pivot pointsof the runners are formed as close to the runners as possible and itfurther consists in the construction and arrangement of parts ashereinafter more particularly described.

Figure 1, is a perspective view of a pair of bobs constructed andconnected together in accordance with my invention. Fig. 2, is across-section through :n-y, Fig. 1. Fig. 3, is an enlarged detailshowing the manner of connecting the raves together. Fig. 4, is anenlarged detail of the washer used on the bar connecting the two frontrunners. Fig. 5, is a side elevation of the pivoted connections betweenthe runners and the bents. Fig. 6, is a detail showing the strapconnecting the frontbar with the king bolt. Fig. 7,is a detail of thebolster stake.

In the drawings, A, are the runners made of light channel steel or ifpreferred, of wood.

B, are blocks, one of which is connected to each runner. The bottom ofeach block has two lips 0, formed on it to fit into and butt. againstthe sides of the channel steel runner A, in order to hold the said blockfrom twisting. Each block B, is bolted to the runner with bolts D,having their heads counter-sunk in the bottom of the runner. A sleeve orferrule E,is provided for each bolt D, to prevent the runner being drawnout of shape when the nuts are screwed up (see Fig. 2). Cheeks F, extendfrom each block B, leaving a space between the two checks for thereception of a projection G, which extends from the bot tom of the plateH, which is shaped as indicated to support the bent I. A hole is madethrough the cheeks F, and the projection G, through which hole a pin orbolt J, is inserted. The bottom of the projection G, is cut on a circledrawn from the center of the pin or bolt J, and the bottom of the blockB, between the cheeks F, is likewise formed so that the projection G,may rest and rock upon the said rounded bottom. The top of each cheek F,is also rounded on a circle struck from the center of the pin or bolt J,and the plate H, between its flanges K, is formed to receivethe top ofthe checks. in this way the weight is carried on the bottom of theprojection G, and on the top of the cheeks F, while the lateral movementis resisted by the cheeks F, butting against the flanges K. By thisarrangement, the center about which the runners rock is very close tothe ground and the runners will accommodate themselves to theirregularities of the ground without imparting an appreciable amount ofbackward or forward throw to the bents.

In order to connect the raves M, I provide a link N, to which the ravesare flexibly connected by the links L. The link N, slides in the guide0, which is fast to the bent I, as indicated. This plan of connectingthe raves together permits their use for strengthening the runners A,Without interfering with the free rocking movement of the said runners.The raves are bolted to the runner in a similar manner to that used forthe blocks B.

The runners of the front bob are connected together by the rod Q, whichpasses through elongated holes made in the runners A. On the outside ofeach runner, a washer R, (see Fig. i) is placed and a pin S,is placedthrough each end of the rod Q, outside the washer B. This connection isprovided so that the runners will be held together, but at the same timebe permitted to rock independently of each other. So as to carry thedraft to the middle of the forward runner-I provide braces a,bolted atone end to the runners and at the other end having an eye through whichthe rod Q, passes. Each runner of the rear bob is flexibly connected tothe reach by means of a rod T, one end of which is bent at right anglesas indicated through a hole in the bracket d, the other end being hookedand inserted through a hole in a clevis U, secured to the reach V. Therear end of the reach is connected to the rear bolster c, in the usualway. The fore end is provided with jaws g, which are connected to aswivel eye f, connected to the front bolster e. The front bent I, isprovided with a circle h, on which the front bolster rests in turning.

The king bolt i, passes through the bolster and bent in the usual wayand also through the strap j, which is arranged as shown in Fig. 6. Thisstrap is connected to the rod Q, at the point of attachment of thetongue 70.

The hammer strap m, is provided with a hook at one end and a bolt at theother, so that it may be turned with either end forward to suit theparticular style of connection that may be adapted to the kind of doubletree being used.

In Fig. 7, is shown in detail the method I prefer of constructing thebolster end and bolster stake. A metal cap n, is fitted on the end ofthe bolster. The stake 0, is pivoted on the cap 12, so that it may beturned up or down as may be necessary. The short arm of the stake isprovided with a lug 9, adapted to engage with a projection g on thelower side of the cap so as to hold the stake in a vertical position.The outer end of the cap '11,, is shaped as shown to grip any desiredlink of the chain used in fastening on the load.

From this description it will be seen that I have provided by myinvention a very strongly constructed bob-sleigh and have arranged it sothat while each runner has a free rocking movement independent of theother runners, the motion of the runners will not impart any backward orforward motion to the bents, and further, that owing to the swiveledconnection of the reach to the front bob, the latter may take any angleof twist with the rear bob without in any way straining the reach orother parts.

What I claim as my invention is 1. A runner A, having a block B, withlips 0, formed on its bottom to fit between the sides of the runner A,and secured to the said runner by means of the bolts D, and ferrule E,cheeks F, extending from the block B, and having rounded ends asdescribed, in combination with a plate H, having a projection G, formedon it to fit between the cheeks F, and rest upon the bottom of therounded recess, a pin or bolt J, fitting a hole made through the cheeksF, and projection G,substantially as and for the purpose specified.

2. A runner A, having raves M, bolted to it and links L, hinged to eachrave, in combination with a link N, movably fitted into the guide 0,fixed to the bent I, substantially as and for the purpose specified.

3. A bolster end cap made of metal on which the stake is pivoted, thelower side being shaped to engage with the said bolster stake so as tohold it in position for use and the end shaped to form acatch to grip achain, substantially as and for the purpose specified.

Toronto, June 14, 1893.

JAMES HENRY JACKSON.

In presence of- G. M. NEFF, J. EDW. MAYBEE.

